Yi, Ruowei, Zhao, Yinchao, Liu, Chenguang, Sun, Yi, Zhao, Chun, Li, Yinqing, Yang, Li and Zhao, Cezhou
(2022)
A Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>-Based Composite as Separator Coating for Stable Li-S Batteries.
NANOMATERIALS, 12 (21).
3770-.
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A Tisub3subCsub2subTsubxsub-Based Composite as Separator Coating for Stable Li-S Batteries.pdf - Published version Download (3MB) | Preview |
Abstract
The nitrogen-doped MXene carbon nanosheet-nickel (N-M@CNi) powder was successfully prepared by a combined process of electrostatic attraction and annealing strategy, and then applied as the separator coating in lithium-sulfur batteries. The morphology and structure of the N-M@CNi were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), Raman spectrum, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and nitrogen adsorption-desorption method. The strong LiPS adsorption ability and high conductivity are associated with the N-doped carbon nanosheet-Ni modified surface. The modified separator offers the cathode of Li-S cell with greater sulfur utilization, better high-rate adaptability, and more stable cycling performance compared with the pristine separator. At 0.2 C the cell with N-M@CNi separator delivers an initial capacity of 1309 mAh g<sup>-1</sup>. More importantly, the N-M@CNi separator is able to handle a cathode with 3.18 mg cm<sup>-2</sup> sulfur loading, delivering a capacity decay rate of 0.043% with a high capacity retention of 95.8%. Therefore, this work may provide a feasible approach to separator modification materials towards improved Li-S cells with improved stability.
Item Type: | Article |
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Uncontrolled Keywords: | MXene, carbon nanosheets, lithium-sulfur batteries, modified separator |
Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
Depositing User: | Symplectic Admin |
Date Deposited: | 16 Feb 2023 17:13 |
Last Modified: | 17 Oct 2023 11:45 |
DOI: | 10.3390/nano12213770 |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3168459 |